GB1079241A - Improvements in or relating to digital comparator circuits - Google Patents
Improvements in or relating to digital comparator circuitsInfo
- Publication number
- GB1079241A GB1079241A GB1915264A GB1915264A GB1079241A GB 1079241 A GB1079241 A GB 1079241A GB 1915264 A GB1915264 A GB 1915264A GB 1915264 A GB1915264 A GB 1915264A GB 1079241 A GB1079241 A GB 1079241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- indicates
- nand
- elements
- stages
- relating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/02—Comparing digital values
- G06F7/026—Magnitude comparison, i.e. determining the relative order of operands based on their numerical value, e.g. window comparator
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
1,079,241. Digital comparators. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 6, 1965 [May 7, 1964], No. 19152/64. Heading G4M. Two binary (or binary-coded decimal) numbers A, B have corresponding digits applied to comparator stages as shown, C r =1 indicates A r >B r , D r =1 indicates B r >A r and E r =1 indicates A r =B r . In the event A r #B r , E r =0 and suppresses outputs C, D of all following stages. Similar circuits using NAND instead of NOR elements can be used. A comparator in which alternate stages comprise three NAND and three NOR elements is described, this embodiment not requiring NOR4 to complement E r . The outputs C r , D r of the various stages are coupled to respective common OR gates which may be made up from NAND and NOR elements. An A=B output is obtained from the E output of the least significant stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1915264A GB1079241A (en) | 1964-05-07 | 1964-05-07 | Improvements in or relating to digital comparator circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1915264A GB1079241A (en) | 1964-05-07 | 1964-05-07 | Improvements in or relating to digital comparator circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1079241A true GB1079241A (en) | 1967-08-16 |
Family
ID=10124609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1915264A Expired GB1079241A (en) | 1964-05-07 | 1964-05-07 | Improvements in or relating to digital comparator circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1079241A (en) |
-
1964
- 1964-05-07 GB GB1915264A patent/GB1079241A/en not_active Expired
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